Yes, people need to keep the charity holder safe. Apart from that people usually start negging each other from day 5 on, EXCEPT for the charity holder. The charity holder should definitely try and comment more than others as well.
I ask the charity holder who they want me to nom and if no preference then I just make a choice. And if u have veto ask the charity holder who they want vetoed dint just use on who u want unless they don't care.